XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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2026-06-17	1:15pm			Max		Min
Weather		----
Temperature		22.9 °C		23.1 °C	1:10pm	12.9 °C	2:46am
Relative Humidity		70 %		93 %	3:25am	69 %	1:14pm
Dew Point		17.1 °C		18.3 °C	1:04pm	11.7 °C	2:31am
Wind Velocity		200 ° at  1.5 G 5.2 kt		6.1 kt	8:09am
Pressure		29.679 "  ↓		29.752 "	12:12am	29.611 "	10:29am
Rainfall Rate		0.0 mm/h		16.4 mm/h	3:47am
Snow On Ground		0 cm
Brightness / Darkness		373 W/m² /  0.00 m/"²		1213 W/m²	12:25pm	20.38 m/"²	2:45am
Remarks

Rainfall	Today	5.0 mm	Storm Total	6.4 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-1.42 mm

Lake Conditions

Water Temperature  13.0 °C

Waves  ¼ '

ICE FREE

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Meteor Index	4   Random
Aurora Index / Solar	18   Quiet   + 1 nT	Solar Flux   113  sfu  /   S 0    G 0    R 0   /  MUF   21.4 MHz

Sunrise	5:38am	Sunset	9:01pm
Moonrise	N/A	Moonset	N/A	Moon Phase	Waxing Crescent

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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